Efeito de carrapaticidas/inseticidas "pour-on" sobre adultos do besouro coprófago africano Onthophagus gazella Fabr. (Coleoptera:Scarabaeidae)

Bianchin, I.; Alves, R.G. O.; Koller, W. W.

doi:10.1590/s0301-80591998000200014

Cited by 22 publications

(19 citation statements)

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“…Os inimigos naturais podem limitar a reprodução do inseto nas fezes em cerca de 90% e acredita-se que, sem eles o número de moscas poderia ser insuportavelmente elevado . Salienta-se ainda que, a quase totalidade dos inseticidas existentes no mercado age nas fezes bovinas, eliminando, por exemplo, os besouros (Bianchin et al 1997. Portanto, deve-se usar o mínimo de inseticida nos animais afim de minimizar a contaminação da carne e do leite e preservar o ambiente.…”

Section: Resul Resul Resul Resul Results T T T Tados E Discus Ados E Dunclassified

Mosca-dos-chifres, Haematobia irritans: comportamento e danos em vacas e bezerros Nelore antes da desmama

Bianchin

Alves

2002

Pesq. Vet. Bras.

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The hornfly and losses caused by it in Nellore cows and pre-weaning calves where studied, using two groups of 60 animals each, one group with a natural infestation and the other without hornfly, during four consecutive years. It was seen that the number of flies on the cows did not exceed an average of 80 flies/animal in all years of observation. The majority of the cows (83%) had few flies, whereas 17% had larger numbers. The calves were infested with few flies. Rainfall in excess of 100 mm during short periods diminished fly infestation. Weight gain in the cows without flies (treated with insecticides) as well as their calves was greater than in the control cows, but not statistically significant (P>0.05). Mean percentage pregnancy during the four years was 15% more in treated cows than the non-treated animals, and this difference was probably due to the infestation of the bulls.

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Section: Resul Resul Resul Resul Results T T T Tados E Discus Ados E Dunclassified

Mosca-dos-chifres, Haematobia irritans: comportamento e danos em vacas e bezerros Nelore antes da desmama

Bianchin

Alves

2002

Pesq. Vet. Bras.

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“…Within South America, D. gazella has been recorded due to both dispersion and unofficial introduction events in Colombia [18]- [25], Bolivia [26], Paraguay [27], Peru [28], and Argentina [29]; and only due to unofficial introduction events in Brazil [30] [31] [32], continental Chile, and Easter Island [33].…”

Section: Introductionmentioning

confidence: 99%

Introduction, Establishment, and Invasion of Digitonthophagus gazella (Fabricius, 1787) (Coleoptera: Scarabaeinae) in the Savannas of Venezuela and Colombia

Noriega¹,

Delgado²,

Blanco³

et al. 2017

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The invasion process involves overcoming certain barriers with negative effects on the biodiversity and ecosystem function. This is the case of the African dung beetle Digitonthophagus gazella, which was introduced in the United States and other countries in Central and South America to help in dung removal activity. The distribution of D. gazella has been documented in the Americas, but in Venezuela there is little information. Trying to understand the process of invasion of the Colombian-Venezuelan savannas and measure their potential impact, the information stored in collections and literature was collected. Five new state records were reported for Venezuela, as well as four scenarios of the process of introduction and establishment of this species in the region. Although the amount of records has increased, the number of individuals sampled is still incipient. The possible areas of invasion and the potential negative effects that the presence of this species exerts in these regions are also discussed. In addition, potential areas of invasion and negative effects of this species are discussed. Results emphasize the importance of generating models of the invasive process in order to design programs that monitor the effects incurred by the presence of D. gazella on native species and propose control and mitigation mechanisms.

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“…Essa espécie foi introduzida no Havaí em 1958 (Harris et al, 1982), na Austrália em 1968 (Bornemissza 1976) e, em diferentes etapas no Chile (Zunino & Barbero, 1993), nos Estados Unidos (Blume & Aga 1978;Fincher et al, 1983) e no Brasil (Miranda et al, 1990;Bianchin et al, 1998). A América Central tem sido invadida pelo D. gazella por indivíduos das populações introduzidas inicialmente nos Estados Unidos (Barbero & López-Guerrero, 1992).…”

Section: Introductionunclassified

Invasão de áreas de savana intra-amazônicas por Digitonthophagus gazella (Fabricius, 1787) (Insecta: Coleoptera: Scarabaeidae)

Matavelli

Louzada

2008

Acta Amaz.

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RESUMONeste estudo, foi avaliada a invasão da comunidade de Scarabaeinae detritívoros de uma savana amazônica pela espécie africana Digitonthophagus gazella (Fabricius 1787). O estudo foi realizado nas proximidades da vila de Alter do Chão (2º 31' S e 55º 00' W), localizada a aproximadamente 36 km a sudoeste de Santarém, Pará, Brasil. Vinte e duas áreas de savanas de 3,75 ha (250 x 150 m) distribuídas em 30.000 ha foram amostradas, no período de 21 de julho a 13 de agosto de 2003, utilizando 66 armadilhas de queda com três tipos de iscas (fezes bovinas, fezes humanas e carcaças). Foram encontrados indivíduos de D. gazella em quatro das vinte e duas áreas amostradas. Procurou-se explicar a presença da espécie nas áreas de savana através de análises de regressão logística, onde as variáveis explicativas foram: ocorrência de queimada nos últimos seis anos, diversidade e abundância total de Scarabaeidae nativos presentes na área, abundância de Canthon sp.1, (espécie de Scarabaeidae mais abundante na região). Exceto pela abundância total de indivíduos de Scarabaeidae nativos, nenhuma das variáveis bióticas e abióticas tiveram efeito estatisticamente significativo na presença do D. gazella. Estes resultados podem ser explicados por: (a) algum fator ainda não analisado, relacionado à invasão da área pelo D. gazella; (b) Não houve tempo para a dispersão e estabelecimento da espécie em todas as áreas; (c) A comunidade nativa de Scarabaeinae apresenta resistência à invasão pelo D. gazella. PALAVRAS-CHAVE:Amazônia, Ecossistema tropical, Brasil, Invasão biológica. Invasion of intra-Amazonian savannas by the dung beetleDigintonthophagus gazella (Fabricius, 1787) (Insecta: Coleoptera: Scarabaeidae) ABSTRACT This work aimed to verify the invasion of the dung beetles community from intra-Amazonian savanna by the African species Digitonthophagus gazella (Fabricius 1787). The research was carried out near Alter do Chão village (2º 31' S; 55º 00' W), 36 Km Southwest of Santarém, Pará, Brazil. Twenty two areas were sampled, from 21 July to 13 August 2003, using 66 baited pitfall traps (cattle dung, human faeces and carcass bait). D. gazella individuals were found in four of twenty two sampled areas. The presence of the species in the savanna was analysed by a logistic regression, using the occurrence of burnings in the last six years, species richness and abundance of native Scarabaeinae, and abundance of Canthon sp1, (the most abundant species in the region), as explanatory variables. Except for the total abundance of native Scarabaeinae, none of the variables were statistically significant for the presence of D. gazella. Hypothetically, these results were probably due to a non-analysed factor related to the invasibility of the area by D. gazella, or lack of time for the species to disperse and establish in all the areas, or a resistance of native dung beetle community to D. gazella invasion. Nevertheless, there must be a competitive mechanism of invasion resistance bounding the abundance of native species and D. gazella invasi...

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Efeito de carrapaticidas/inseticidas "pour-on" sobre adultos do besouro coprófago africano Onthophagus gazella Fabr. (Coleoptera:Scarabaeidae)

Cited by 22 publications

References 0 publications

Mosca-dos-chifres, Haematobia irritans: comportamento e danos em vacas e bezerros Nelore antes da desmama

Mosca-dos-chifres, Haematobia irritans: comportamento e danos em vacas e bezerros Nelore antes da desmama

Introduction, Establishment, and Invasion of Digitonthophagus gazella (Fabricius, 1787) (Coleoptera: Scarabaeinae) in the Savannas of Venezuela and Colombia

Invasão de áreas de savana intra-amazônicas por Digitonthophagus gazella (Fabricius, 1787) (Insecta: Coleoptera: Scarabaeidae)

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